Using the AltGr+")" combination to type "]" on French keyboards does not work, it instead goes back to the previous page in panels history. This problem is that the "[" key on US keyboards and the ")" key on French keyboards have the same virtual keycode (VK_OEM_4 0xDB). See http://trac.webkit.org/browser/trunk/Source/WebCore/inspector/front-end/InspectorView.js?rev=112539#L93
This bug is a part of bug 85312. *** This bug has been marked as a duplicate of bug 85312 ***